I've made a lucky assed shot past 450 on a PDwith a 50 gr. Berger, but I've run it comfortably to 300 with holdover.

A turret gunner could easily do better, lest the wind is too crazy.

It was so windy here Sunday the 22 Hornets blew off the 6 inch plate at 200, so it was going off more than 3 inches!